FKIE_CVE-2026-20254

Vulnerability from fkie_nvd - Published: 2026-06-10 18:16 - Updated: 2026-06-17 10:17
Severity
5.7 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Summary
In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.13, 10.2.2510.15, 10.1.2507.23, and 9.3.2411.132, a low-privileged user that does not hold the 'admin' or 'power' Splunk roles could craft a malicious classic dashboard that exfiltrates sensitive data to an external server when a higher-privileged user views it, bypassing the external content restriction through a Cascading Style Sheets (CSS) injection.<br><br>The Trusted Domains security check does not fully validate inline style attribute values, which can allow for outbound requests to untrusted domains and credential exfiltration when a victim views a crafted dashboard.
References
psirt@cisco.comhttps://advisory.splunk.com/advisories/SVD-2026-0604Vendor Advisory
Impacted products
Vendor Product Version
splunk splunk *
splunk splunk *
splunk splunk *
splunk splunk *
splunk splunk_cloud_platform *
splunk splunk_cloud_platform *
splunk splunk_cloud_platform *
splunk splunk_cloud_platform *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Splunk Enterprise",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "10.2.4",
              "status": "affected",
              "version": "10.2",
              "versionType": "custom"
            },
            {
              "lessThan": "10.0.7",
              "status": "affected",
              "version": "10.0",
              "versionType": "custom"
            },
            {
              "lessThan": "9.4.12",
              "status": "affected",
              "version": "9.4",
              "versionType": "custom"
            },
            {
              "lessThan": "9.3.13",
              "status": "affected",
              "version": "9.3",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Splunk Cloud Platform",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "10.3.2512.13",
              "status": "affected",
              "version": "10.3.2512",
              "versionType": "custom"
            },
            {
              "lessThan": "10.2.2510.15",
              "status": "affected",
              "version": "10.2.2510",
              "versionType": "custom"
            },
            {
              "lessThan": "10.1.2507.23",
              "status": "affected",
              "version": "10.1.2507",
              "versionType": "custom"
            },
            {
              "lessThan": "9.3.2411.132",
              "status": "affected",
              "version": "9.3.2411",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "psirt@cisco.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "matchCriteriaId": "B9D80F1C-F849-4D62-B82A-6B8963EEEBFB",
              "versionEndExcluding": "9.3.13",
              "versionStartIncluding": "9.3.0",
              "vulnerable": true
            },
            {
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            },
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              "versionEndExcluding": "10.2.4",
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              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "9.3.2411.132",
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              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "10.1.2507.23",
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              "vulnerable": true
            },
            {
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              "matchCriteriaId": "71B91525-F2D6-4699-8D6B-8D375A8785EE",
              "versionEndExcluding": "10.2.2510.15",
              "versionStartIncluding": "10.2.2510",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6387100F-0867-4B83-8071-BA1FCE023B2F",
              "versionEndExcluding": "10.3.2512.13",
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              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.13, 10.2.2510.15, 10.1.2507.23, and 9.3.2411.132, a low-privileged user that does not hold the \u0027admin\u0027 or \u0027power\u0027 Splunk roles could craft a malicious classic dashboard that exfiltrates sensitive data to an external server when a higher-privileged user views it, bypassing the external content restriction through a Cascading Style Sheets (CSS) injection.\u003cbr\u003e\u003cbr\u003eThe Trusted Domains security check does not fully validate inline style attribute values, which can allow for outbound requests to untrusted domains and credential exfiltration when a victim views a crafted dashboard."
    }
  ],
  "id": "CVE-2026-20254",
  "lastModified": "2026-06-17T10:17:20.270",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 3.6,
        "source": "psirt@cisco.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-20254",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-10T18:26:45.451095Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-10T18:16:40.887",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://advisory.splunk.com/advisories/SVD-2026-0604"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    }
  ]
}


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